RESTRUCTURING (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2025	Oct. 31, 2024	Oct. 31, 2025	Oct. 31, 2024
Restructuring Cost and Reserve [Line Items]
Restructuring charges, including writeoffs			$ 5,200
Restructuring charges	$ 3,171	$ 0	12,221	$ 0
July Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges	3,200		7,100
Partially offset related to reversal of stock based compensation expense	500		500
Accrued payroll and benefit	6,100		6,100
Remaining amount related to accrued payroll and benefit	1,500		1,500
Employee Severance and Employee Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges			3,000
Employee Severance and Employee Benefits | July Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 3,700		3,700
Inventory Write-offs
Restructuring Cost and Reserve [Line Items]
Restructuring charges			2,200
Contract Termination | July Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges			$ 3,900